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Lasco 438-422 Reducer Bushing - 4 in spigot x 3 in FPT, PVC

Lasco 438-422 Reducer Bushing - 4 in spigot x 3 in FPT, PVC

Brand: PVC
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$16.50
$12.38
SKU 438422

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Lasco 438-422 reducer bushing transitions a 4 in spigot to a 3 in female pipe thread (FPT) with durable Schedule 40 PVC construction. Designed for pool, irrigation and potable water applications, this reducing bushing provides a secure, corrosion-resistant connection where pipe size reduction is required. Manufactured in the USA to industry standards, the bushing delivers consistent dimensions and reliable fit for standard IPS Schedule 40 piping systems.

  • Model: Lasco 438-422; 4 in (spigot) x 3 in (FPT).
  • Material & schedule: Injection-molded PVC, Schedule 40; white finish; NSF 14 and NSF 61 compliant.
  • Performance: Maximum operating pressure up to 220 psi (varies with temperature); temperature range 32°F to 140°F.
  • Standards & use: Manufactured to ASTM D2466; suitable for irrigation, pool/spa and many potable water systems.
  • Dimensions: Approx. overall length 2-3/8 in; designed for standard IPS/Schedule 40 pipe sizes.
  • Installation notes: Spigot end solvent-welds to pipe; use appropriate thread sealant on FPT; do not use with compressed air or gases.

This reducing bushing is a straightforward, reliable option for adapting between 4 in and 3 in Schedule 40 PVC piping. Before installation, verify local plumbing codes and confirm material compatibility for any household potable hot-water systems; PVC fittings are generally limited to cold-water and ambient temperature applications. For threaded connections, apply an appropriate pipe thread sealant or tape and tighten per manufacturer guidance. Pair this bushing with compatible spigots, couplings, or adapters to complete your plumbing run with confidence.

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Frequently Asked Questions

What pipe sizes does the 438-422 reducer bushing connect?
It connects a 4 in spigot to a 3 in female pipe thread (FPT) for standard Schedule 40 PVC (IPS) systems.
Is this bushing suitable for potable water or pool systems?
Yes. It meets NSF 14 and NSF 61 standards and is commonly used in potable water, pool and irrigation applications.
How should I install the spigot and threaded ends?
Solvent-weld the 4 in spigot end to Schedule 40 PVC pipe; apply pipe thread sealant or tape to the 3 in FPT before assembly.

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